Pump



Patented Nov. 3, 19257.` 'l' l nmswonrn our, or neueren,

Application 'ma Jaun-y s, im. serai ab,

To all it mafy concem:

Be it known that I, ,ELLswoirrH GRAY, a citizen of the United States,residing at Houston, Harris County, Texas, have in.l vented a certainnew and useful Improve-- mentin Pumps, of which the following is aspecification. l My invention relates to an improvemen in pumpsparticularly adapted for deep well "ing in the usual manner, said tubingiit barrel 1 is formedV work, and isfurther intendedto operate inhandling liquids containing a certain amount of sand or other sedimenttending to wear the pump.

It is an object of the invention to provvide a pum construction in whichthe ordinary standing valve or foot valve will be dispensed with, thefunction of the foot valve. bein served by a sliding valve within thepump arrel. v

Another object is to provide a pump con- :struction to which sand orsediment willA other objects and advantages will more specificallyreferred to in .the specification as follows:

Referring to the drawing, Fig. 1 is a central longitudinal sectionthrough the' lower end of the pump'barrel 'constructed in accordancewith my invention.. Fig. 2 is a transverse section on the plane 2-2 ofFig. 1. Like numerals of reference are applied to like pai-ts in all theviews.

In the drawing the pump` barrel 1 is shown as being connected to acoupling 2 by means in-which it may be attached -to tikiling shown. Thepump with a single wall ad]acent its upper end, but this wall isprovided with an outer wall 2 connected to the inner wall at 3, as shownin the drawing. lVhile this connectionis shown as an intevral one, itispbf' vious that any preferred ibrm of connection between the twowalls; of the working barrel? may be employed. The inner wall, which maybe designated as 4, is continuous from;

its upper end to the lower end to form an inner cylindrical surface inwhich fthe to allow it to remain in ,the

plunger may operate. The outer "wall is* spaced from the inner wall toprovide an upper chamberv 5 and a lower chamber 6,'

thesewtwo chambers Abeing separated by' a partition 7. The lower end ofthe outer wall '4 is closed,- as shown at the inlet'of fluid at thatend. n' The inner wall 4 of the Vworking barrel is provided with aplurality of o enings 9 leading to the chamber 5, and another series ofopeni 10 spaced slightl below the partition ,-and connect' "t ejinsideiof the working har-rel with the chamber 6; the

u per wall is also provided with a plurality o openings 11 at a ointabove the openings .9 in th`e innerwa 'lhe` lunger-wliich Icon'templateemploy. ing is ormed with a tubular head 12, which is reduced somewhatin diameter at the upper end to form a seat 13 for packing cups 14spaced apart by the usual acing rings 15, a -nut 16 at the upper endothe-plunger serving to hold the cups and spacingrings removablyinposition. The upper end of the plunger is closed exce t of ope 17 toallow-the passage of oil or other iquid upwardly into the workingbarrel. The said u per end is provided with a threaded 18 b'ymeans ofwhich it may be connected to 19.

The lower end of the plunger head 12 is threaded internally at 20 toreceive a lower section 21 of slightly smaller diameter. forms ashoulder 22 to'liinit the upward for a plurality a pump rod The lowerend of the head 12 thusv 8, to prevent Y 70 spaced slightly 'llilmovement on the member: 21 of a valve ring 23. The downward movement ofsaid valve ring relative to the member 21.is limited by an uppershoulder 24 formed upon a valve housing 25 which is screwed upon thelower end of the valve housing 25 is formed with a chamber 26 therein atthe lower end of which a seat is formed at 27 for Va valve 28 ofordinary construction. The passa e 29 below the said galve is smaller iniameter than the valve chamber, a's clearly shown in the drawing. The uward movement of the valve is adapted to 'by a transverse pin extendingber at a point spaced above the valve. The outerv diameter of the valvehousing 25 is reduced -to provide a seat for packing rings plungermember 21. Thediametrically across said chamand s aacers indicated at31, similar to those 'descri d at the upper end of the plunger,

ani

pump barre said packing means being held in position by the nut 32 inthe lower end of the -valve housing. i

In operation, the device will be positioned in the ower end of the wellat any desired point so that it is submerged in the liquid. At thedownward stroke of the plunger the shoulder 22 will contact with thering 23 which fits closely within the working barrel, and will foice thesaid valve ring downwardly, thus exposing the openings\9 and 10, `andallowing the passage of liquid through the openings into the chamber; 6,as indicated by the arrows. i

On the upward stroke of the plunger therefore, the suction exerted b'the packing means 31 will draw the'liqui 1n through v said openings tofill the chamber 6, and .the space withinthe lower end of the workingbarrel. At the extreme upper en d of the upward stroke the shoulder 24upon the valve housing will contact with the valve .ring and move itupwardl to close the openin s'9 and 10, thus shutting off the further etor outlet of li uid. On the downwardl stroke thereafter, the ring willremain in position covering said o enin through the frictionalengagement o? sai rin with the inner wall 4 of the a inst movement,until acted upon by the s oulders 22 or 23 of the plun er, by the`action of friction`between the va ve and the pump barrel, aidedsomewhat by the viscosity of the oil between the same, said oil comingso. will be only a slight tendenc from the well which is being pumped.Such fluid as finds entrance to the space above and below the valve islar ly gas or air and, being ,compressible, as insufficient force tomove the valve unduly before the plunger engages with said valve. Thefluid therefore, which is drawn within the lower end of the chamber 6 ofthe pump rrel, as previously described, will be forced upwardly ast thevalve`28 toward the surface. When the plunger has nearly reached thelower end of its stroke the shoulder 22 .will contact with the valvering 23 and force it downwardly l'to expose the openings, the partsassumin approximately the position shown in the rawmg. The cups 14 atthe upper end will assist in raising the fluid upwardly toward thesurface and also prevent the li uid from passing backwardly into the woring barrel, in an obvious manner. 1 y

As Athe inlet openings 11 are spaced npwardly from the bottom of thewell, there for sand or sediment being drawn inward y with the oil orother liquid, and for that reason very `little trouble with foreignmatter of this kind will be ex erienced. Such sand or sedimentas does.nd access through these assages will' have an opportunity of sett ingThevalve 23 is maintained.

,said Wall and pump into the lower end of the' chamber 6,'and

will not therefore tend to wear the plunger or working barrel to anygreat extent. The

valve ring 23 has only a slight movement in the operation of the pump,and will not be subject to material wear. It will therefore serve itspurpose, for a materially longer eriod than will the ordinary standingva ve, and will be a source of great economy in .the operation of `thepump. Furthermore, if wear occurs in the pump plunger, the said plungerand the valve ring thereon will be easily withdrawn to the surfacewithout the necessity 1 of withdrawing the workingbarrel, as is thegcasewhere the ordinary standing valve is to be repaired.

If however it .becomes necessary to withdraw the tubing and workingbarrel, the fact that the openin s 9 and 11 are not closed, will allowthe uid to drain from the barrel vas the said barrel is raised and-rthus prevent waste of vthe oil in the tubing and make it mucheasierand cleaner to handle the pipe as it is withdrawn. I

It will be obvious that the construction vherein shown may be modifiedin various ways without departing yfrom the spirit of.

the invention. I do not therefore wish to be limited to the exact mannerin which the parts are connected or assembled further than comes withinthe scope of the appended claims.

What I claim as new, and desire to protect bly Letters Patent is: i

1. n a pump, a pump barrel having an inner wall open at its lower end,an `outer wall spaced from the inner wall ofthe pump barrel, a partitionclosing the space between the said walls at an intermediate point, thelower end 'of the outer wall being closed, .said outer and inner wallshaving openings therein above the intermediate partition, the innerwalls having laterali 7openings `below said partition, a pump plunger, avalve ring slidable on thelower rtion of said pump plunger, means tolimit the movement of said ring on said plunger, whereb the openings inthe inner wall of the wor ing barrel below said partition will be closeddurin the greater portionof the downward stro e of the plunger and beopen during the greater portion of the upwardl stroke, in the mannerdescribed.

2. A pump of the character described, comprising a pump barrel, an outerwall spaced therefrom and enclosing the larger portion of said pumpbarrel, a partition connecting said barrel and said outer wallintermediate its ends, there beine openings in barrel a ove said pariioY tition, and an opening in said barrel below Aui artition durin thegreater part of the down stroke an to open during the greater part ofthe up stroke, in the manner described.

3. In a pump of the character described, a pump barrel, a plungertherein, a valve ring slidable on said plunger within saidv barrel,packing means on said plun er above and below said ring, said ring aapted to close the passages of liquid from said pump barrel on the "downstroke and permit en-v trance of liquid thereto on the up stroke.

4.1m a pump of the character described,

a pump barrel, a wall attached to said barrel adjacent the upper end andenclosing the lower end of said barrel, a plunger slidable in said pumpbarrel, a sliding ring thereon, packing means on said plunger above andbelow said ring, there being bpenin in said wall and said pump barrelntrolled by the movement of said ring in th manner described.

-5. In a pump of the character described,

a pump barrel, a wall spaced from said barrel and enclosing the lowerend thereof, a plunger vin said 'pump barrel, said wall and said pumpbarrel having openin for the admission of vliquid, a ring on saidplunger and controlled by the movement of said plunger to open andclosevsaid openings in the manner described, and a partitionoonlenclosing the lower end of said pum barre and the lower of saidopenings, an means on said plunger 'to move said ring-to close saidopenings as desired.

In testimony whereof I hereunto aiiix my signature this 12th day ofDecember, A.4 D. 1924.`

'- 'ELLswoR'rH GRAY.

